2 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index c00abbe3cd13..d35950121fc4 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -377,6 +377,20 @@ static void mixer_run(struct mixer_context *ctx)
         mixer_regs_dump(ctx);
 }
 
+static void mixer_stop(struct mixer_context *ctx)
+{
+        struct mixer_resources *res = &ctx->mixer_res;
+        int timeout = 20;
+
+        mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
+
+        while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
+                        --timeout)
+                usleep_range(10000, 12000);
+
+        mixer_regs_dump(ctx);
+}
+
 static void vp_video_buffer(struct mixer_context *ctx, int win)
 {
         struct mixer_resources *res = &ctx->mixer_res;
@@ -1094,6 +1108,7 @@ static void mixer_poweroff(struct exynos_drm_manager *mgr)
         }
         mutex_unlock(&ctx->mixer_mutex);
 
+        mixer_stop(ctx);
         mixer_window_suspend(mgr);
 
         ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
diff --git a/drivers/gpu/drm/exynos/regs-mixer.h b/drivers/gpu/drm/exynos/regs-mixer.h
index 4537026bc385..5f32e1a29411 100644
--- a/drivers/gpu/drm/exynos/regs-mixer.h
+++ b/drivers/gpu/drm/exynos/regs-mixer.h
@@ -78,6 +78,7 @@
 #define MXR_STATUS_BIG_ENDIAN           (1 << 3)
 #define MXR_STATUS_ENDIAN_MASK          (1 << 3)
 #define MXR_STATUS_SYNC_ENABLE          (1 << 2)
+#define MXR_STATUS_REG_IDLE             (1 << 1)
 #define MXR_STATUS_REG_RUN              (1 << 0)
 
 /* bits for MXR_CFG */